Home / 18,865.37-28,284.51-8,864.48

Finding the Fourth Proportional to 18,865.37, 28,284.51 and 8,864.48

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Solution

The fourth proportional to 18,865.37, 28,284.51 and 8,864.48 is: 13,290.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.37 : 28,284.51 = 8,864.48 : x
  2. Step 2: Convert to fraction form
    18,865.37/28,284.51 = 8,864.48/x
  3. Step 3: Cross multiply
    18,865.37x = 28,284.51 × 8,864.48
  4. Step 4: Simplify right side
    18,865.37x = 250,727,473.20
  5. Step 5: Solve for x
    x = 250,727,473.20/18,865.37
  6. Step 6: Final answer
    x = 13,290.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.